Comparative in situ remediation potential of Pseudomonas putida 710A and Commamonas aquatica 710B using plant (Vigna radiata (L.) wilczek) assay

Comparative plant growth promoting potential of psychrotolerant diazotrophs, Pseudomonas sp. JJS2 and Enterobacter sp. AAB8 against native Cajanus cajan (L.) and Eleusine coracana (L.)

“…Previously, it was confirmed that Western Indian Himalayan soil has bacterial community with a tremendous potential of biodegradation (Soni et al, 2008) and plant growth promotion properties (Suyal et al, 2014a, b;Rani et al, 2013;Singh et al, 2012). Premalatha et al (2009) also highlighted the prevalence of many important genes/proteins from icy heights of the Himalayas.…”

“…The total chlorophyll content was also higher in C. cajan and E. coracana plants inoculated with strain JJS2 with an increase of 75.41 and 11.82%, respectively. Increased chlorophyll content and hence increased photosynthesis enhanced plant growth and yield (Rani et al, 2013, Singh et al, 2012. Significant increase in nitrate reductase activity in inoculated C. cajan and E. coracana plants was observed by 121.54 and 157.14%, respectively ( Table 2).…”

“…In brief, the soil was loamy in texture and soil pH was 7.2. Pots were kept in a net house having natural fluctuating temperature ranging from 30±5°C in day to 10±5°C in night, for 60 days (Katiyar and Goel, 2003;Rani et al, 2013). Psychrotolerant diazotrophs, Pseudomonas sp.…”

Microbial associated plant growth and heavy metal accumulation to improve phytoextraction of contaminated soils

“…Non-biological methods of increasing plant growth, such as fertilizer application, have been shown to improve Ni extraction in Alyssum bertolonii by increasing plant biomass as much as 300% with no appreciable reduction in Ni concentration (Robinson et al 1997). There are also numerous examples in the literature of PGP-microorganisms improving phytoextraction, even if the mechanism of PGP action cannot be identified (Belimov et al 2004, He et al 2009, Li et al 2007, Liu et al 2015, Malekzadeh et al 2012, Rani et al 2013). For instance, increases in canola biomass caused by inoculation of Pseudomonas fluorescens and P. tolaasii increased total Cd accumulation by 72% and 107%, respectively, despite Cd concentrations in plant tissues remaining constant (Dell'Amico et al 2008).…”

“…The behavior of the response variables was classified as increased (↑), decreased (↓) or unchanged (nil-). Within each response, variable-category studies were subdivided based on whether microbial treatments were successful (blues) or unsuccessful (oranges) at improving the net amount of heavy metals extracted (HM net ) per plant (Abou-Shanab et al 2006, Belimov et al 2004, Dell'Amico et al 2008, Gao et al 2010, He et al 2009, Jeong et al 2013, Khan and Lee 2013, Lampis et al 2015, Li et al 2007, Liu et al 2015, Ma et al 2011, Ma et al 2013, Malekzadeh et al 2012, Marques et al 2013, Płociniczak et al 2013, Prapagdee et al 2013, Rajkumar and Freitas 2008, Rajkumar et al 2013, Rani et al 2013, Sheng et al 2008, Sheng and Xia 2006, Wani and Khan 2013, Wani et al 2007, Whiting et al 2001, Yang et al 2012, Zaidi et al 2006, Zhang et al 2012. *Wherever possible, dry plant biomass was used.…”